blob: aef58096e069847fadfc5d6b8e6a92594cf7b170 [file] [log] [blame]
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPathBuilder.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "src/base/SkRandom.h"
#define W 400
#define H 400
#define N 10
constexpr SkScalar SH = SkIntToScalar(H);
static SkPath rnd_quad(SkPaint* paint, SkRandom& rand) {
auto a = rand.nextRangeScalar(0,W),
b = rand.nextRangeScalar(0,H);
SkPathBuilder builder;
builder.moveTo(a, b);
for (int x = 0; x < 2; ++x) {
auto c = rand.nextRangeScalar(W/4, W),
d = rand.nextRangeScalar( 0, H),
e = rand.nextRangeScalar( 0, W),
f = rand.nextRangeScalar(H/4, H);
builder.quadTo(c,d,e,f);
}
paint->setColor(rand.nextU());
SkScalar width = rand.nextRangeScalar(1, 5);
width *= width;
paint->setStrokeWidth(width);
paint->setAlphaf(1.0f);
return builder.detach();
}
static SkPath rnd_cubic(SkPaint* paint, SkRandom& rand) {
auto a = rand.nextRangeScalar(0,W),
b = rand.nextRangeScalar(0,H);
SkPathBuilder builder;
builder.moveTo(a, b);
for (int x = 0; x < 2; ++x) {
auto c = rand.nextRangeScalar(W/4, W),
d = rand.nextRangeScalar( 0, H),
e = rand.nextRangeScalar( 0, W),
f = rand.nextRangeScalar(H/4, H),
g = rand.nextRangeScalar(W/4, W),
h = rand.nextRangeScalar(H/4, H);
builder.cubicTo(c,d,e,f,g,h);
}
paint->setColor(rand.nextU());
SkScalar width = rand.nextRangeScalar(1, 5);
width *= width;
paint->setStrokeWidth(width);
paint->setAlphaf(1.0f);
return builder.detach();
}
class BeziersGM : public skiagm::GM {
public:
BeziersGM() {}
protected:
SkString getName() const override { return SkString("beziers"); }
SkISize getISize() override { return SkISize::Make(W, H * 2); }
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(9)/2);
paint.setAntiAlias(true);
SkRandom rand;
for (int i = 0; i < N; i++) {
canvas->drawPath(rnd_quad(&paint, rand), paint);
}
canvas->translate(0, SH);
for (int i = 0; i < N; i++) {
canvas->drawPath(rnd_cubic(&paint, rand), paint);
}
}
private:
using INHERITED = skiagm::GM;
};
DEF_GM( return new BeziersGM; )